Variation in Seed Morphology of Quercus robur L. among Different Genotypes in Kashmir Valley

Q4 Environmental Science

Ecology, Environment and Conservation Pub Date : 2025-01-01 DOI:10.53550/eec.2025.v31i01s.049

A. El Khateeb, P. A. Khan, Laurence A. Mound, Sajid Nabi, Novizar Nazir, Martínez J.A., Jeelani M.I., Muhammad Bılal

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Abstract

A study conducted at the Division of Forest Biology and Tree Improvement laboratory, SKUAST-K, assessed seed morphology variation in Quercus robur L. across different genotypes in Kashmir Valley. The analysis included eighteen phenotypically superior trees from the Srinagar district, focusing on seed length, seed diameter, 100-seed weight, and kernel percent. Significant variability was observed, with genotype T6 from Rajbagh consistently exhibiting the highest values across all traits. Seed length ranged from 2.57 cm to 3.81 cm, with T6 showing the maximum length (3.81 cm). Seed diameter varied between 1.14 cm and 1.88 cm, with T6 again showing the maximum diameter (1.88 cm). The 100-seed weight ranged from 787.96 g to 902.36 g, with T6 having the highest weight (902.36 g). Kernel percent ranged from 71.48% to 88.12%, with T6 recording the highest percentage (88.12%). The study found genotype T6 to consistently demonstrate superior seed traits, indicating its potential for tree improvement programs. The genotypic coefficient of variation (GCV) for seed length, diameter, 100-seed weight, and kernel percent were approximately 8.94, 15.01, 10.32, and 26.56, respectively. The highest heritability (h²) was observed in 100-seed weight and kernel percent (71.61%), indicating strong genetic control over these traits. This research highlights the importance of understanding seed morphology in relation to genotype variability, providing insights for improving Quercus robur L. under diverse environmental conditions in the Kashmir Valley.

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克什米尔山谷不同基因型栎树种子形态的变异

森林生物学和树木改良实验室SKUAST-K分部进行了一项研究，评估了克什米尔山谷不同基因型栎种子形态的变化。分析了来自斯利那加地区的18棵表型优越的树木，重点研究了种子长度、种子直径、百粒重和果仁百分比。观察到显著的变异，来自Rajbagh的T6基因型在所有性状中始终表现出最高的值。种子长度在2.57 ~ 3.81 cm之间，T6最大，为3.81 cm。种子直径在1.14 ~ 1.88 cm之间变化，T6种子直径最大（1.88 cm）。百粒重787.96 ~ 902.36 g，以T6最高（902.36 g）。籽粒率为71.48% ~ 88.12%，以T6最高（88.12%）。研究发现，T6基因型一贯表现出优越的种子性状，表明其在树木改良计划中的潜力。种子长、直径、百粒重和粒率的基因型变异系数分别约为8.94、15.01、10.32和26.56。百粒重和粒率遗传力最高（h²），为71.61%，说明遗传控制作用强。本研究强调了了解种子形态与基因型变异关系的重要性，为克什米尔山谷不同环境条件下的栎树种子改良提供了新的思路。

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Ecology, Environment and Conservation Environmental Science-Nature and Landscape Conservation

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期刊介绍： Published Quarterly Since 1995. Ecology, Environment and Conservation is published in March, June, September and December every year. ECOLOGY, ENVIRONMENT AND CONSERVATION is one of the leading International environmental journal. It is widely subsribed in India and abroad by Institutions and Individuals in education and research as well as by Industries, Govt. Departments and Research Institutes.